Lock pin mechanism and automobile seat

Abstract

The utility model relates to the technical field of automobile seats, and discloses a lock pin mechanism and an automobile seat, and the lock pin mechanism comprises an installation main body, a lock pin, a lock pin and a lock pin, the lock pin module is provided with an unfolding position and a folding position on the mounting main body, and a first elastic piece is arranged between the lock pin module and the mounting main body; the driving support is provided with a sliding structure, and the sliding structure is arranged in the sliding groove and the locking groove in a sliding mode; a second elastic piece is arranged between the driving bracket and the lock pin module; when the lock pin module is located at the unfolding position, the sliding structure is located in the lock groove, the elastic force of the second elastic piece can enable the sliding structure to be kept in the lock groove, and then the lock pin module is kept at the unfolding position. An inhaul cable is arranged on the driving support, the sliding structure can be driven to slide into the sliding groove from the locking groove by pulling the inhaul cable, and the lock pin module is switched to the folding position. The lock pin structure has the advantages that the lock pin structure is high in supporting rigidity, the problem that a backrest shakes during a road test can be solved, and the comfort of passengers is better.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a locking pin mechanism and an automobile seat. Background Art

[0002] The 4 / 2 / 4 structure of the car seat divides the seat back into three parts: 40%, 20% and 40%. The 20% part is in the middle, and the two 40% parts are on the left and right sides. This type of seat is generally used for the back seat of the car, and passengers can fold the backrest in sections according to actual needs.

[0003] A locking pin mechanism is provided between the 20% and 40% parts of the backrest to achieve a fixed connection between the two. When the 20% part of the backrest is folded, the locking pin will be exposed. In order to prevent it from bumping against the passengers, the locking pin is generally set to be foldable. When the 20% part of the backrest is folded, the locking pin is driven to fold to the 40% part of the backrest.

[0004] The existing locking pin mechanism mainly includes a rotating shaft, a locking pin, a torsion spring and a cable. The locking pin is arranged on the rotating shaft, the torsion spring is sleeved on the rotating shaft, and the cable is connected between the 20% part of the backrest and the rotating shaft. When the 20% part of the backrest is folded, the cable pulls the rotating shaft to rotate, thereby causing the locking pin to rotate and fold. The locking pin is reset by the elastic force of the torsion spring. During the actual road test, when the 20% part of the backrest shakes, the locking pin will also swing accordingly, and the 20% part of the backrest cannot be fully fixed, and the shaking amount is large. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a locking pin mechanism and a car seat with strong supporting rigidity and capable of solving the problem of shaking of the backrest during road testing.

[0006] The utility model solves the technical problem by adopting a technical solution of providing a locking pin mechanism applied to the backrest of a car seat, comprising:

[0007] An installation body, wherein the installation body is provided with a slide groove and a lock groove which are interconnected;

[0008] A locking pin module is rotatably arranged on the mounting body, and the locking pin module has an unfolded position and a folded position on the mounting body, and a first elastic member is arranged between the locking pin module and the mounting body;

[0009] A driving bracket is connected to the locking pin module and can drive the locking pin module; a sliding structure is provided on the driving bracket, and the sliding structure can be slidably arranged in the sliding groove and the locking groove; a second elastic member is provided between the driving bracket and the locking pin module;

[0010] When the lock pin module is in the deployed position, the sliding structure is in the lock slot, and the elastic force of the second elastic member can keep the sliding structure in the lock slot, thereby keeping the lock pin module in the deployed position;

[0011] The driving bracket is provided with a pull cable, and pulling the pull cable can drive the sliding structure to slide from the locking groove into the sliding groove, and switch the locking pin module to the folded position.

[0012] Furthermore, the locking groove is communicated with the top end of the sliding groove, and the locking groove is arranged obliquely relative to the sliding groove.

[0013] Furthermore, the locking groove is configured as an arc groove, and when the elastic force of the second elastic member keeps the sliding structure in the locking groove, the sliding structure abuts against the side wall of the locking groove.

[0014] Furthermore, the slide groove is arranged in the form of a long groove and is arranged along the vertical direction.

[0015] Further, the locking pin module comprises a rotating shaft, a rotating bracket and a locking pin, the rotating bracket and the locking pin are both arranged on the rotating shaft, and the rotating shaft is rotatably arranged on the mounting body;

[0016] The sliding structure is arranged at one end of the driving bracket, one end of the driving bracket away from the sliding structure is rotatably connected to the rotating bracket, and the pulling cable is arranged in the middle of the driving bracket.

[0017] Furthermore, one end of the driving bracket away from the sliding structure is connected to the rotating bracket through a connecting piece;

[0018] The second elastic member is a second torsion spring, which is sleeved on the connecting member, and one torsion arm of the second torsion spring abuts against the driving bracket, while the other torsion arm of the second torsion spring abuts against the rotating bracket.

[0019] Further, the first elastic member is a first torsion spring, the first torsion spring is sleeved on the rotating shaft, and one torsion arm of the first torsion spring abuts against the mounting body, and the other torsion arm of the first torsion spring abuts against the locking pin;

[0020] The torsion force of the first torsion spring can drive the locking pin module to rotate and switch from the folded position to the deployed position.

[0021] Furthermore, when the cable is pulled to rotate the driving bracket and the sliding structure slides to the bottom end of the sliding groove, the locking pin module is in the folded position.

[0022] Furthermore, the sliding structure is a screw, and the screw is detachably arranged on the driving bracket.

[0023] The utility model solves the technical problem by adopting a technical solution, and also proposes a car seat, comprising:

[0024] seat;

[0025] A first backrest and a second backrest are arranged side by side on the seat and are rotatable relative to the seat;

[0026] The above-mentioned locking pin mechanism is arranged on the first backrest, and when the locking pin module is in the deployed position, the locking pin mechanism can fix the second backrest to the first backrest;

[0027] The second backrest is provided with a rotating sleeve, and one end of the cable away from the driving bracket is connected to the rotating sleeve; when the second backrest is rotated and folded relative to the seat alone, the rotating sleeve pulls the driving bracket through the cable.

[0028] Compared with the prior art, the utility model has at least the following beneficial effects:

[0029] In the utility model, a slide groove and a lock groove are arranged on the installation body, and a sliding structure is arranged on the driving bracket. When the lock pin module is in the deployed position, under the action of the second elastic member, the sliding structure is firmly held in the lock groove and will not slip out of the lock groove and slide into the slide groove. Therefore, when receiving external force, the lock pin can remain stationary, thereby effectively reducing the shaking of the backrest. In other words, the second elastic member, the driving bracket, and the sliding structure cooperate with the lock groove to form a lock pin holding structure, so that the support rigidity of the lock pin is more sufficient, which can well solve the problem that the second backrest is easy to shake during road testing, and the user experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the locking pin mechanism of the utility model (the locking pin module is in the unfolded position);

[0031] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0032] Figure 3 This is a schematic diagram of the structure of the lock pin mechanism after the installation body is removed;

[0033] Figure 4 It is a front view of the installation body;

[0034] Figure 5 This is a schematic diagram of the structure of the automobile seat of the utility model after the seat portion is removed;

[0035] Figure 6 for Figure 5 Schematic diagram of the structure after removing the second backrest.

[0036] In the figure:

[0037] 1. Installation body; 11. Slide slot; 12. Lock slot;

[0038] 2. Lock pin module; 21. Rotating shaft; 22. Rotating bracket; 23. Lock pin;

[0039] 3. driving bracket; 30. sliding structure; 31. connecting piece;

[0040] 4. a first elastic member;

[0041] 5. A second elastic member;

[0042] 6. Cable;

[0043] 7. First backrest; 780. Rotation center axis;

[0044] 8. Second backrest; 80. Rotating sleeve. DETAILED DESCRIPTION

[0045] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0046] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] Embodiment 1:

[0051] like Figure 1-Figure 4 As shown, a locking pin mechanism is applied to the backrest of a car seat, and mainly includes: a mounting body 1, a locking pin module 2, a driving bracket 3, a first elastic member 4, a second elastic member 5 and a cable 6.

[0052] The installation body 1 is provided with a slide groove 11 and a lock groove 12 which are connected to each other. Specifically, the slide groove 11 is arranged in the vertical direction and is a long groove. The lock groove 12 is preferably arranged in an arc groove, and the lock groove 12 is arranged at the top of the slide groove 11, that is, the lock groove 12 is connected to the top of the slide groove 11, and the lock groove 12 is arranged obliquely relative to the slide groove 11.

[0053] The lock pin module 2 is rotatably arranged on the installation body 1, and the lock pin module 2 has an unfolded position and a folded position on the installation body 1, and a first elastic member 4 is arranged between the lock pin module 2 and the installation body 1. Specifically, the lock pin module 2 includes a rotating shaft 21, a rotating bracket 22 and a lock pin 23, the rotating bracket 22 and the lock pin 23 are both arranged on the rotating shaft 21, and the rotating bracket 22 and the lock pin 23 are both fixedly connected to the rotating shaft 21, and the rotating shaft 21 is rotatably arranged on the installation body 1, and specifically, a circular hole is respectively arranged on the front and rear mounting plates of the installation body 1, and the two ends of the rotating shaft 21 are rotatably arranged in the two circular holes. Among them, the first elastic member 4 is preferably a first torsion spring, the first torsion spring is sleeved on the rotating shaft 21, and one torsion arm of the first torsion spring is against the mounting body 1, and the other torsion arm of the first torsion spring is against the locking pin 23. During actual use, the torsion force of the first torsion spring can drive the locking pin module 2 to rotate and switch from the folded position to the unfolded position, that is, when the locking pin module 2 is switched to the folded position, the torsion force of the first torsion spring can drive the locking pin module 2 to reset.

[0054] It should be explained that when the lock pin module 2 is in the deployed position, the lock pin 23 is approximately horizontal and extends from the side of the installation body 1. At this time, the lock pin 23 can be fixedly connected to the second backrest 8 to fix the second backrest 8 on the first backrest 7. When the lock pin module 2 is in the folded position, the lock pin 23 rotates downward approximately 90 degrees, and the lock pin 23 is folded onto the installation body 1. The lock pin 23 is in a fully folded state, ensuring that it does not protrude from the first backrest 7, thereby ensuring that there is no risk of collision or accidental injury to passengers, and the safety performance is good.

[0055] The driving bracket 3 is connected to the locking pin module 2, and the driving bracket 3 can drive the locking pin module 2. Specifically, the upper end of the driving bracket 3 is rotatably connected to the rotating bracket 22 in the locking pin module 2 through a connecting member 31, and the connecting member 31 is preferably a connecting screw. A sliding structure 30 is provided at one end of the driving bracket 3 away from the rotating bracket 22. The sliding structure 30 is slidably arranged in the slide groove 11 and the lock groove 12. The sliding structure 30 of this embodiment is preferably a screw, which is detachably arranged at the lower end of the driving bracket 3, which is convenient for disassembly and assembly, and is simple to assemble with the slide groove 11 or the lock groove 12.

[0056] A second elastic member 5 is provided between the driving bracket 3 and the locking pin module 2. Specifically, the second elastic member 5 is preferably a second torsion spring, which is sleeved on the connecting member 31, and one torsion arm of the second torsion spring abuts against the driving bracket 3, and the other torsion arm of the second torsion spring abuts against the rotating bracket 22. When the locking pin module 2 is in the deployed position, the sliding structure 30 is in the lock slot 12, and the elastic force of the second elastic member 5 can keep the sliding structure 30 in the lock slot 12, thereby keeping the locking pin module 2 in the deployed position, which is equivalent to when the locking pin module 2 is in the deployed position, the sliding structure 30 is locked in the lock slot 12, and the locking pin module 2 remains in the deployed position and cannot rotate downward, and the sliding structure 30 cannot be separated from the lock slot 12 without applying a downward pulling force on the cable 6.

[0057] It should be explained that the lock slot 12 is arranged in an arc groove, and when the elastic force of the second elastic member 5 keeps the sliding structure 30 in the lock slot 12, the sliding structure 30 abuts against the side wall of the lock slot 12. The sum of the force of the second elastic member 5 acting on the sliding structure 30 and the friction force of the sliding structure 30 on the side wall of the slide slot 11 is greater than the external force acting on the sliding structure 30, so that the sliding structure 30 is locked in the lock slot 12. When the cable 6 applies a downward pulling force, it overcomes the above-mentioned friction force and the force of the second elastic member 5, so that the sliding structure 30 is unlocked, and the lock pin module 2 can be rotated and switched to the folded state.

[0058] In addition, a cable 6 is disposed in the middle of the driving bracket 3. Pulling the cable 6 can drive the sliding structure 30 to slide from the locking groove 12 into the sliding groove 11, that is, unlocking the sliding structure 30, so that the locking pin module 2 can be switched to the folded position. Specifically, when the cable 6 is pulled to rotate the driving bracket 3 and the sliding structure 30 slides to the bottom end of the sliding groove 11, the locking pin module 2 is in the folded position, and the locking pin 23 is completely folded onto the installation body 1.

[0059] In actual use, this embodiment is provided with a slide groove 11 and a lock groove 12 on the installation body 1, and a sliding structure 30 is provided on the drive bracket 3. When the lock pin module 2 is in the deployed position, under the action of the second elastic member 5, the sliding structure 30 is firmly maintained in the lock groove 12, and will not detach from the lock groove 12 and slide into the slide groove 11. Therefore, when receiving external force, the lock pin 23 can remain stationary, thereby effectively reducing the shaking of the backrest. In other words, the second elastic member 5, the drive bracket 3, and the sliding structure 30 cooperate with the lock groove 12 to form a lock pin 23 holding structure, so that the support rigidity of the lock pin 23 is more sufficient, which can well solve the problem that the second backrest 8 is easy to shake during road testing, and the user experience is better.

[0060] Embodiment 2:

[0061] like Figure 5-Figure 6 And combined Figure 1-Figure 3 As shown, a car seat mainly includes:

[0062] A seat (not shown in the figure);

[0063] The first backrest 7 and the second backrest 8 are arranged side by side on the seat portion and can rotate relative to the seat portion. Specifically, a rotation center axis 780 is arranged on the seat portion, and the first backrest 7 and the second backrest 8 can rotate around the rotation center axis 780;

[0064] And the locking pin mechanism in the first embodiment is arranged on the first backrest 7, and the mounting body 1 is fixedly connected to the first backrest 7. When the locking pin module 2 is in the deployed position, the locking pin mechanism can fix the second backrest 8 to the first backrest 7, thereby ensuring the structural stability of the second backrest 8;

[0065] Among them, a rotating sleeve 80 is arranged on the second backrest 8, and the end of the cable 6 away from the driving bracket 3 is connected to the rotating sleeve 80; when the second backrest 8 is rotated and folded relative to the seat alone (that is, the first backrest 7 is not rotated and folded at this time), the rotating sleeve 80 pulls the driving bracket 3 through the cable 6.

[0066] The folding working principle of this car seat backrest is:

[0067] During normal use, the first backrest 7 and the second backrest 8 are both in an upright state, and the lock pin module 2 is in an extended state, the lock pin 23 extends from the side of the first backrest 7 to the second backrest 8, and the second backrest 8 is fixedly connected to the lock pin 23, so that the second backrest 8 is fixedly connected to the first backrest 7, and the structural stability of the second backrest 8 is ensured. At this time, the sliding structure 30 is in the lock slot 12, and the second torsion spring, the driving bracket 3, the sliding structure 30 and the lock slot 12 cooperate, so that the sliding structure 30 cannot be separated from the lock slot 12, and the lock pin module 2 is locked in the extended state, so that the support rigidity of the lock pin 23 is better, which can effectively solve the problem of the second backrest 8 shaking during the road test.

[0068] When the second backrest 8 needs to be rotated forward and folded alone, the second backrest 8 rotates forward along the rotation center axis 780, and the rotation sleeve 80 rotates accordingly, the rotation sleeve 80 pulls the cable 6 downward, the cable 6 pulls the driving bracket 3, the sliding structure 30 on the driving bracket 3 disengages from the lock slot 12, and slides into the slide slot 11. During the rotation of the driving bracket 3, the locking pin module 2 is driven to rotate around the center of the rotating shaft 21 until the sliding structure 30 reaches the lower end of the slide slot 11, the locking pin module 2 switches to the folded position, and the locking pin 23 is completely folded onto the installation body 1. When the tension of the cable 6 is released, the first elastic member 4 and the second elastic member 5 can help the locking pin module 2 to reset.

Claims

1. A locking mechanism, applied to the backrest of a car seat, characterized in that: include: An installation body, wherein the installation body is provided with a slide groove and a lock groove which are interconnected; A locking pin module is rotatably arranged on the mounting body, the locking pin module has an unfolded position and a folded position on the mounting body, and a first elastic member is arranged between the locking pin module and the mounting body; A driving bracket is connected to the locking pin module and can drive the locking pin module; a sliding structure is provided on the driving bracket, and the sliding structure can be slidably arranged in the sliding groove and the locking groove; a second elastic member is provided between the driving bracket and the locking pin module; When the lock pin module is in the deployed position, the sliding structure is in the lock slot, and the elastic force of the second elastic member can keep the sliding structure in the lock slot, thereby keeping the lock pin module in the deployed position; The driving bracket is provided with a pull cable, and pulling the pull cable can drive the sliding structure to slide from the locking groove into the sliding groove, and switch the locking pin module to the folded position.

2. The locking mechanism according to claim 1, characterized in that: The locking groove is communicated with the top end of the sliding groove, and the locking groove is arranged obliquely relative to the sliding groove.

3. The locking pin mechanism according to claim 1 or 2, characterized in that: The locking groove is configured as an arc groove, and when the elastic force of the second elastic member keeps the sliding structure in the locking groove, the sliding structure abuts against the side wall of the locking groove.

4. The locking pin mechanism according to claim 1 or 2, characterized in that: The slide groove is arranged in the form of a long strip groove and is arranged along the vertical direction.

5. The locking pin mechanism according to claim 1, characterized in that: The locking pin module comprises a rotating shaft, a rotating bracket and a locking pin, the rotating bracket and the locking pin are both arranged on the rotating shaft, and the rotating shaft is rotatably arranged on the mounting body; The sliding structure is arranged at one end of the driving bracket, one end of the driving bracket away from the sliding structure is rotatably connected to the rotating bracket, and the pulling cable is arranged in the middle of the driving bracket.

6. The locking mechanism according to claim 5, characterized in that: One end of the driving bracket away from the sliding structure is connected to the rotating bracket through a connecting piece; The second elastic member is a second torsion spring, which is sleeved on the connecting member, and one torsion arm of the second torsion spring abuts against the driving bracket, while the other torsion arm of the second torsion spring abuts against the rotating bracket.

7. The locking mechanism according to claim 5, characterized in that: The first elastic member is a first torsion spring, which is sleeved on the rotating shaft, and one torsion arm of the first torsion spring abuts against the mounting body, and the other torsion arm of the first torsion spring abuts against the locking pin; The torsion force of the first torsion spring can drive the locking pin module to rotate and switch from the folded position to the deployed position.

8. The locking mechanism according to claim 2, characterized in that: When the pull cable is pulled to rotate the driving bracket and the sliding structure slides to the bottom end of the sliding slot, the locking pin module is in the folded position.

9. The locking pin mechanism according to claim 1, characterized in that: The sliding structure is a screw, and the screw is detachably arranged on the driving bracket.

10. A car seat, characterized in that: include: seat; A first backrest and a second backrest are arranged side by side on the seat and are rotatable relative to the seat; The locking pin mechanism according to any one of claims 1 to 9, arranged on the first backrest, and when the locking pin module is in the deployed position, the locking pin mechanism can fixedly connect the second backrest to the first backrest; The second backrest is provided with a rotating sleeve, and one end of the cable away from the driving bracket is connected to the rotating sleeve; when the second backrest is rotated and folded relative to the seat alone, the rotating sleeve pulls the driving bracket through the cable.

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